Ora-01843: Not a valid month error in Webi

Hi,

I am getting Ora-01843: Not a valid month error in Webi reports when I give input value for Date prompt for more than 2 months, i.e 3-Mar-2017 to 30-Apr-2017.

Date value in DB is 01-Dec-2016 HH:MM:SS

In Webi report value for Date prompt is 4/18/2017 HH:MM:SS

Can any one help me with the solution.

Regards

Shankar.